Adjustable barbell



FIG. 1 is a front, top perspective view of the adjustable barbell, showing my new design;

FIG. 2 is a rear, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of the area labeled 9 in FIG. 1 ;

FIG. 10 is an enlarged view of the area labeled 10 in FIG. 2 ; and,

FIG. 11 is an enlarged view of the area labeled 11 in FIG. 3 .

The dash dot dash broken lines of the adjustable barbell in FIGS. 1, 2, and 3 illustrate a boundary and cut line of the enlarged views in FIGS. 9, 10 and 11 and form no part of the claimed design. 

CLAIM The ornamental design for an adjustable barbell, as shown and described. 